Question

A bag of
cement lying in the
open
gets wet due to stain during the night. The next
sun shines brightly. Do you think the
changes, which have oscuoied in the cement,
could be reversed?
​

Answer 1

Its composition changes and is converted into another substance. Since it is a chemical change, so it cannot be reversed.

Printing is an irreversible change because we cannot separate and collect the printing ink after printing.

❤ Hope it helped u ❤

Answer 2

Answer:

It is a chemical change because a new substance is formed

it is a chemical change so it can't be reversed